[geeks] QUESTION: why would a program suddenly start using IPv6?
Charles Shannon Hendrix
shannon at widomaker.com
Fri Jul 6 14:16:29 CDT 2007
On Fri, 6 Jul 2007 10:53:02 -0400
"Caleb Shay" <caleb at webninja.com> wrote:
> On 7/6/07, Charles Shannon Hendrix <shannon at widomaker.com> wrote:
> > On Thu, 5 Jul 2007 19:43:24 -0400 (EDT)
> > der Mouse <mouse at Rodents.Montreal.QC.CA> wrote:
> > > Perhaps you changed something (like libc or the kernel) that's used by
> > > svnserve? (The kernel alone might be enough, if it meant that
> > > interfaces that used to have no v6 addresses now do - even if just
> > > link-local addresses.)
> > Nope... I installed FreeBSD 6.1 when I got the machine about a year ago,
> > and that's it. No kernel upgrade except to build my own kernel right
> > after the install was done.
> > I really can't figure this one out.
> Did a radvd service come up on your network? I'm not a big FreeBSD
> user, but I seem to recall that it will automatically configure IPv6
> if it finds a radvd advertising ipv6 routes on your network.
Not that I'm aware of.
Besides... FreeBSD always configures IPv6 by default. It's never been a
The same exact binary 6-7 weeks ago didn't listen on an IPv6 address. That
was the last time I used subversion.
Then yesterday, it suddenly defaulted to listening on an IPv6 address.
Changes in that time period:
- started running MRTG
- new version of dovecot imap server
- started running collectd on two machines
- added Linksys VOIP box to network
- added a Hammer NAS to the network
- changed my desktop PC OS from Slackware to Kubuntu
I can't think of anything about those actions that would cause *ONE* program
out of dozens on a server to start using IPv6.
Right now I just have it filed under "Weird Sysadmin Observations" and I'm
too busy to worry about it very much.
Maybe I should just disable IPv6 completely on my systems.
I'm not using it, and none of the providers appear to be anywhere near ready
to make a major switchover, and most software doesn't seem to be ready either.
shannon | An Irishman is never drunk as long as he can hold onto
| one blade of grass and not fall off the face of the earth.
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